AQA A Level Biology Req. Practical 12

AQA required practical 12:
Investigation into the effect of a named environmental factor on the distribution of a given species.

Template and accompanying PowerPoint presentation for students to plan and write up their investigation for practical 12.

Designed to be conducted over a 2 hour session with an onsight investigation.

Exam questions included have been taken from https://www.tes.com/member/m_adanah who also provides a free template for this practical and many others.

Specification points covered:
The size of a population can be estimated using:
• randomly placed quadrats, or quadrats along a belt transect, for slow-moving or non-motile organisms
• the mark-release-recapture method for motile organisms. The assumptions made when using the mark-release-recapture method

Students could:
• investigate the distribution of organisms in a named habitat using randomly placed frame quadrats, or a belt transect
• use both percentage cover and frequency as measures of abundance of a sessile species.
Students could use the mark-release-recapture method to investigate the abundance of a motile species.